If you live in South Vegas, you're close to the best shooting range there is, 4610 Blue Diamond road out toward the mine. You'll find some competitive shooters there.
If you live out toward North Vegas, go out Craig road east past where the old race track used to be and there all kinds of canyons . Take your targets because there's nothing out there. Nobody cares if you shoot there.
There is and indoor pistol range on Tropicana but I can't think of the name of it . Look in the phonebook.
I have a condo at lake Las Vegas, but I've not been out there since last Sept.